shhh, you were supposed to make him find that out on his own :P

it depends on the system and what kind of settings you want to change. You can do lots of stuff through *.msc files (look for their names in the WINNT or WINDOWS directory. just typing the name of the file should open the window (not too sure on locked down systems). explorer opens explorer. Control panel opens control panel. i think that'll give you a good start. be careful and don't do damage